Discordance: The Troubled History of the Hubble Constant

The troubled history of the Hubble constant told in an authoritative, comprehensible, and entertaining manner

In 1927 Georges Lemaître argued that our universe is expanding, a conclusion rendered more startling by the astronomical data that backed it up, presented two years later by Edwin Hubble. The speed of this expansion is governed by Hubble's constant, and Discordance tells its troubled history.

This unpredictable and fascinating story begins with the first tentative steps to measure th...